An original Apple 1 computer from 1976 - one of only six still in working order - was sold at auction in Cologne, Germany, on Saturday for more than 500,000 euros ($US650,000).
The Apple 1 was one of the first 50 built by Apple co-founders Steve Jobs and Steve Wozniak in Jobs' parents' garage.
The computer - consisting only of a motherboard, signed by Mr Wozniak - went to an anonymous buyer from Asia.
Last year, an Apple 1 sold for 490,000 euros ($US633,000).
Only about 200 Apple 1s were ever made. The BBC reports about 46 remain in existence, but only six are still in working order.